College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 23

A 100-turn square wire coil of area 0.040 m 2 rotates about a vertical axis at 1 500 rev/min, as indicated in Figure P20.32. The horizontal component of Earth's magnetic field at the location of the loop is 2.0 × 10 5 T. Calculate the maximum emf induced in the coil by Earth's field.